Răspuns:
1. c=mdizx100/ms
ms1=100g
c1=25%
md1= 25x100/100g=25g
ms2=200g
c2=65%
md2= 65x200/100g= 130g
c3= md3x100/ms3 md3=md1+md2= 155g
ms3=ms1+ms2=300g
c155x100/300=51,7%
2
ms1/ms2=?
c2=12%-------> md1=c1xms1/100=0,12ms1
c2=42%-----> md2=0,42ms2
c3=md3x100/ms3 md3=md1+md2=0,12ms1+0,42ms2
ms3=ms1+ms2
30/100= (0,12ms1+0,42ms2)/(ms1+ms2)
30ms1+30ms2=12ms1+42ms2
ms1/ms2= 18/12= 3/2
Explicație:
